User's Manual

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H380-GL Hardware User Manual Page
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3.3.2.2 Hardware Shutdown
By pulling down FUL_CARD_POWER_OFF# for more than 10ms (the recommended value is 100ms),
the power management unit (PMU) of the module powers down, and then the module achieves hardware
shutdown. The PMU of the module powers down when pulling down FUL_CARD_POWER_OFF#, the
module may be damaged after several start-ups and shutdowns; therefore, RESET# pin shall be pulled
down for 100ms before pulling down FUL_CARD_POWER_OFF#. The hardware shutdown control timing
is shown in Figure 3-8:
Figure 3- 8 Hardware Shutdown Control Timing
Note:
VSD2_1V8 is a PMU inside the module, it outputs 1.8V voltage and has not been led out via M.2
interface, the appearance of this voltage in timing chart is mainly purposed to facilitate the
understanding of timing.
3.3.3 Module Reset
The module supports reset function. Pulling down RESET# signal for more than 10ms (the recommended
value is 100ms) can reset the module to the initial state, and the module restarts after releasing RESET#.
When performing Reset function, PMU inside the module will not power down. The recommended circuit
design is shown in Figure 3-9: